Direct Red 16 structure

Direct Red 16

TL;DR: Direct Red 16 (CAS 6227-02-7) is a chemical compound with molecular formula C26H17N5Na2O8S2 and molecular weight 637.03 g/mol, supplied by Kehong Biological (Henan Kehong Biological Technology Co., Ltd.) with CRO/CDMO custom synthesis services.

disodium;7-amino-4-hydroxy-3-[(5-hydroxy-6-phenyldiazenyl-7-sulfonatonaphthalen-2-yl)diazenyl]naphthalene-2-sulfonate

Also Known As: Direct Red 16, C.I. Direct Red 16, disodium salt, C.I. Direct Red 16, EC 228-323-4, disodium;7-amino-4-hydroxy-3-[(5-hydroxy-6-phenyldiazenyl-7-sulfonatonaphthalen-2-yl)diazenyl]naphthalene-2-sulfonate

CAS: 6227-02-7
Molecular Formula C26H17N5Na2O8S2
Molecular Weight 637.03 g/mol
LogP -0.37
Topological Polar Surface Area 247.0 Ų
Hydrogen Bond Donors 3
Hydrogen Bond Acceptors 13
Rotatable Bonds 4
Exact Mass 637.0314
Heavy Atoms 43
Complexity 1160.0

Chemical Identifiers

CAS Number 6227-02-7
SMILES C1=CC=C(C=C1)N=NC2=C(C=C3C=C(C=CC3=C2O)N=NC4=C(C=C5C=C(C=CC5=C4O)N)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]
InChIKey MMFAIRVIRUMWLM-UHFFFAOYSA-L

Product Overview

Direct Red 16 (CAS 6227-02-7), with molecular formula C26H17N5Na2O8S2 and molecular weight 637.03 g/mol. IUPAC: disodium;7-amino-4-hydroxy-3-[(5-hydroxy-6-phenyldiazenyl-7-sulfonatonaphthalen-2-yl)diazenyl]naphthalene-2-sulfonate.

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Safety Data Sheet (MSDS / SDS) View the Laboratory Chemical Safety Summary (LCSS) on PubChem — includes GHS classifications, hazard statements, first aid measures, and handling precautions.
View MSDS →

Chemical Property Profile of Direct Red 16

XLogP
-0.37
TPSA (Topological Polar Surface Area)
247.0
Hydrogen Bond Donors
3
Hydrogen Bond Acceptors
13
Rotatable Bonds
4
Heavy Atoms
43
Complexity
1160.0
Exact Mass
637.0314
Monoisotopic Mass
637.0314
Data Source: Chemical property values are referenced from PubChem, the world's largest open chemistry database maintained by the National Center for Biotechnology Information (NCBI), U.S. National Library of Medicine.

Property Insights of Direct Red 16

The XLogP value of -0.37 indicates that Direct Red 16 is hydrophilic (water-soluble), making it suitable for aqueous formulations and biological assay applications. The TPSA of 247.0 Ų indicates high polarity, suggesting Direct Red 16 may have limited membrane permeability but good aqueous solubility. Following Lipinski's Rule of Five, Direct Red 16 has 3 hydrogen bond donor(s) and 13 hydrogen bond acceptor(s), which may warrant consideration for formulation optimization.

Frequently Asked Questions

What is the typical lead time for this product?
Lead time typically ranges from 3-7 business days for in-stock items. For larger quantities or custom orders, please contact us for specific lead times.
Can you provide samples for testing?
Yes, we offer sample quantities for quality testing. Please submit an inquiry with your requirements and we will arrange samples accordingly.
What documentation do you provide with the product?
We provide COA (Certificate of Analysis), MSDS (Material Safety Data Sheet), and technical data sheets with each shipment.
Do you ship internationally?
Yes, we ship to most countries worldwide. Shipping costs and delivery times vary by location. Please contact us for specific shipping information.

Frequently Asked Questions

What is the CAS number of Direct Red 16?

The CAS number of Direct Red 16 is 6227-02-7.

What is the molecular formula of Direct Red 16?

The molecular formula of Direct Red 16 is C26H17N5Na2O8S2.

What is the molecular weight of Direct Red 16?

The molecular weight of Direct Red 16 is 637.03 g/mol.

Where can I buy Direct Red 16?

You can request a quote for Direct Red 16 directly from KEHONG BIO. Contact us or email info@kehongbio.com for pricing and availability.

Does KEHONG BIO offer custom synthesis for Direct Red 16?

Yes, KEHONG BIO provides custom synthesis services for Direct Red 16 and related compounds. Contact us with your specific requirements including quantity, purity, and timeline.

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